mirror of
https://git.anonymousland.org/anonymousland/synapse.git
synced 2024-12-26 23:19:24 -05:00
375 lines
11 KiB
Python
375 lines
11 KiB
Python
# Copyright 2015, 2016 OpenMarket Ltd
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
|
|
from typing import List
|
|
from unittest.mock import Mock, patch
|
|
|
|
from synapse.metrics.jemalloc import JemallocStats
|
|
from synapse.util.caches.lrucache import LruCache, setup_expire_lru_cache_entries
|
|
from synapse.util.caches.treecache import TreeCache
|
|
|
|
from tests import unittest
|
|
from tests.unittest import override_config
|
|
|
|
|
|
class LruCacheTestCase(unittest.HomeserverTestCase):
|
|
def test_get_set(self):
|
|
cache = LruCache(1)
|
|
cache["key"] = "value"
|
|
self.assertEqual(cache.get("key"), "value")
|
|
self.assertEqual(cache["key"], "value")
|
|
|
|
def test_eviction(self):
|
|
cache = LruCache(2)
|
|
cache[1] = 1
|
|
cache[2] = 2
|
|
|
|
self.assertEqual(cache.get(1), 1)
|
|
self.assertEqual(cache.get(2), 2)
|
|
|
|
cache[3] = 3
|
|
|
|
self.assertEqual(cache.get(1), None)
|
|
self.assertEqual(cache.get(2), 2)
|
|
self.assertEqual(cache.get(3), 3)
|
|
|
|
def test_setdefault(self):
|
|
cache = LruCache(1)
|
|
self.assertEqual(cache.setdefault("key", 1), 1)
|
|
self.assertEqual(cache.get("key"), 1)
|
|
self.assertEqual(cache.setdefault("key", 2), 1)
|
|
self.assertEqual(cache.get("key"), 1)
|
|
cache["key"] = 2 # Make sure overriding works.
|
|
self.assertEqual(cache.get("key"), 2)
|
|
|
|
def test_pop(self):
|
|
cache = LruCache(1)
|
|
cache["key"] = 1
|
|
self.assertEqual(cache.pop("key"), 1)
|
|
self.assertEqual(cache.pop("key"), None)
|
|
|
|
def test_del_multi(self):
|
|
cache = LruCache(4, cache_type=TreeCache)
|
|
cache[("animal", "cat")] = "mew"
|
|
cache[("animal", "dog")] = "woof"
|
|
cache[("vehicles", "car")] = "vroom"
|
|
cache[("vehicles", "train")] = "chuff"
|
|
|
|
self.assertEqual(len(cache), 4)
|
|
|
|
self.assertEqual(cache.get(("animal", "cat")), "mew")
|
|
self.assertEqual(cache.get(("vehicles", "car")), "vroom")
|
|
cache.del_multi(("animal",))
|
|
self.assertEqual(len(cache), 2)
|
|
self.assertEqual(cache.get(("animal", "cat")), None)
|
|
self.assertEqual(cache.get(("animal", "dog")), None)
|
|
self.assertEqual(cache.get(("vehicles", "car")), "vroom")
|
|
self.assertEqual(cache.get(("vehicles", "train")), "chuff")
|
|
# Man from del_multi say "Yes".
|
|
|
|
def test_clear(self):
|
|
cache = LruCache(1)
|
|
cache["key"] = 1
|
|
cache.clear()
|
|
self.assertEqual(len(cache), 0)
|
|
|
|
@override_config({"caches": {"per_cache_factors": {"mycache": 10}}})
|
|
def test_special_size(self):
|
|
cache = LruCache(10, "mycache")
|
|
self.assertEqual(cache.max_size, 100)
|
|
|
|
|
|
class LruCacheCallbacksTestCase(unittest.HomeserverTestCase):
|
|
def test_get(self):
|
|
m = Mock()
|
|
cache = LruCache(1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertFalse(m.called)
|
|
|
|
cache.get("key", callbacks=[m])
|
|
self.assertFalse(m.called)
|
|
|
|
cache.get("key", "value")
|
|
self.assertFalse(m.called)
|
|
|
|
cache.set("key", "value2")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
def test_multi_get(self):
|
|
m = Mock()
|
|
cache = LruCache(1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertFalse(m.called)
|
|
|
|
cache.get("key", callbacks=[m])
|
|
self.assertFalse(m.called)
|
|
|
|
cache.get("key", callbacks=[m])
|
|
self.assertFalse(m.called)
|
|
|
|
cache.set("key", "value2")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
def test_set(self):
|
|
m = Mock()
|
|
cache = LruCache(1)
|
|
|
|
cache.set("key", "value", callbacks=[m])
|
|
self.assertFalse(m.called)
|
|
|
|
cache.set("key", "value")
|
|
self.assertFalse(m.called)
|
|
|
|
cache.set("key", "value2")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
def test_pop(self):
|
|
m = Mock()
|
|
cache = LruCache(1)
|
|
|
|
cache.set("key", "value", callbacks=[m])
|
|
self.assertFalse(m.called)
|
|
|
|
cache.pop("key")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
cache.set("key", "value")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
cache.pop("key")
|
|
self.assertEqual(m.call_count, 1)
|
|
|
|
def test_del_multi(self):
|
|
m1 = Mock()
|
|
m2 = Mock()
|
|
m3 = Mock()
|
|
m4 = Mock()
|
|
cache = LruCache(4, cache_type=TreeCache)
|
|
|
|
cache.set(("a", "1"), "value", callbacks=[m1])
|
|
cache.set(("a", "2"), "value", callbacks=[m2])
|
|
cache.set(("b", "1"), "value", callbacks=[m3])
|
|
cache.set(("b", "2"), "value", callbacks=[m4])
|
|
|
|
self.assertEqual(m1.call_count, 0)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 0)
|
|
self.assertEqual(m4.call_count, 0)
|
|
|
|
cache.del_multi(("a",))
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 1)
|
|
self.assertEqual(m3.call_count, 0)
|
|
self.assertEqual(m4.call_count, 0)
|
|
|
|
def test_clear(self):
|
|
m1 = Mock()
|
|
m2 = Mock()
|
|
cache = LruCache(5)
|
|
|
|
cache.set("key1", "value", callbacks=[m1])
|
|
cache.set("key2", "value", callbacks=[m2])
|
|
|
|
self.assertEqual(m1.call_count, 0)
|
|
self.assertEqual(m2.call_count, 0)
|
|
|
|
cache.clear()
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 1)
|
|
|
|
def test_eviction(self):
|
|
m1 = Mock(name="m1")
|
|
m2 = Mock(name="m2")
|
|
m3 = Mock(name="m3")
|
|
cache = LruCache(2)
|
|
|
|
cache.set("key1", "value", callbacks=[m1])
|
|
cache.set("key2", "value", callbacks=[m2])
|
|
|
|
self.assertEqual(m1.call_count, 0)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 0)
|
|
|
|
cache.set("key3", "value", callbacks=[m3])
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 0)
|
|
|
|
cache.set("key3", "value")
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 0)
|
|
|
|
cache.get("key2")
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 0)
|
|
|
|
cache.set("key1", "value", callbacks=[m1])
|
|
|
|
self.assertEqual(m1.call_count, 1)
|
|
self.assertEqual(m2.call_count, 0)
|
|
self.assertEqual(m3.call_count, 1)
|
|
|
|
|
|
class LruCacheSizedTestCase(unittest.HomeserverTestCase):
|
|
def test_evict(self):
|
|
cache = LruCache(5, size_callback=len)
|
|
cache["key1"] = [0]
|
|
cache["key2"] = [1, 2]
|
|
cache["key3"] = [3]
|
|
cache["key4"] = [4]
|
|
|
|
self.assertEqual(cache["key1"], [0])
|
|
self.assertEqual(cache["key2"], [1, 2])
|
|
self.assertEqual(cache["key3"], [3])
|
|
self.assertEqual(cache["key4"], [4])
|
|
self.assertEqual(len(cache), 5)
|
|
|
|
cache["key5"] = [5, 6]
|
|
|
|
self.assertEqual(len(cache), 4)
|
|
self.assertEqual(cache.get("key1"), None)
|
|
self.assertEqual(cache.get("key2"), None)
|
|
self.assertEqual(cache["key3"], [3])
|
|
self.assertEqual(cache["key4"], [4])
|
|
self.assertEqual(cache["key5"], [5, 6])
|
|
|
|
def test_zero_size_drop_from_cache(self) -> None:
|
|
"""Test that `drop_from_cache` works correctly with 0-sized entries."""
|
|
cache: LruCache[str, List[int]] = LruCache(5, size_callback=lambda x: 0)
|
|
cache["key1"] = []
|
|
|
|
self.assertEqual(len(cache), 0)
|
|
cache.cache["key1"].drop_from_cache()
|
|
self.assertIsNone(
|
|
cache.pop("key1"), "Cache entry should have been evicted but wasn't"
|
|
)
|
|
|
|
|
|
class TimeEvictionTestCase(unittest.HomeserverTestCase):
|
|
"""Test that time based eviction works correctly."""
|
|
|
|
def default_config(self):
|
|
config = super().default_config()
|
|
|
|
config.setdefault("caches", {})["expiry_time"] = "30m"
|
|
|
|
return config
|
|
|
|
def test_evict(self):
|
|
setup_expire_lru_cache_entries(self.hs)
|
|
|
|
cache = LruCache(5, clock=self.hs.get_clock())
|
|
|
|
# Check that we evict entries we haven't accessed for 30 minutes.
|
|
cache["key1"] = 1
|
|
cache["key2"] = 2
|
|
|
|
self.reactor.advance(20 * 60)
|
|
|
|
self.assertEqual(cache.get("key1"), 1)
|
|
|
|
self.reactor.advance(20 * 60)
|
|
|
|
# We have only touched `key1` in the last 30m, so we expect that to
|
|
# still be in the cache while `key2` should have been evicted.
|
|
self.assertEqual(cache.get("key1"), 1)
|
|
self.assertEqual(cache.get("key2"), None)
|
|
|
|
# Check that re-adding an expired key works correctly.
|
|
cache["key2"] = 3
|
|
self.assertEqual(cache.get("key2"), 3)
|
|
|
|
self.reactor.advance(20 * 60)
|
|
|
|
self.assertEqual(cache.get("key2"), 3)
|
|
|
|
self.reactor.advance(20 * 60)
|
|
|
|
self.assertEqual(cache.get("key1"), None)
|
|
self.assertEqual(cache.get("key2"), 3)
|
|
|
|
|
|
class MemoryEvictionTestCase(unittest.HomeserverTestCase):
|
|
@override_config(
|
|
{
|
|
"caches": {
|
|
"cache_autotuning": {
|
|
"max_cache_memory_usage": "700M",
|
|
"target_cache_memory_usage": "500M",
|
|
"min_cache_ttl": "5m",
|
|
}
|
|
}
|
|
}
|
|
)
|
|
@patch("synapse.util.caches.lrucache.get_jemalloc_stats")
|
|
def test_evict_memory(self, jemalloc_interface) -> None:
|
|
mock_jemalloc_class = Mock(spec=JemallocStats)
|
|
jemalloc_interface.return_value = mock_jemalloc_class
|
|
|
|
# set the return value of get_stat() to be greater than max_cache_memory_usage
|
|
mock_jemalloc_class.get_stat.return_value = 924288000
|
|
|
|
setup_expire_lru_cache_entries(self.hs)
|
|
cache = LruCache(4, clock=self.hs.get_clock())
|
|
|
|
cache["key1"] = 1
|
|
cache["key2"] = 2
|
|
|
|
# advance the reactor less than the min_cache_ttl
|
|
self.reactor.advance(60 * 2)
|
|
|
|
# our items should still be in the cache
|
|
self.assertEqual(cache.get("key1"), 1)
|
|
self.assertEqual(cache.get("key2"), 2)
|
|
|
|
# advance the reactor past the min_cache_ttl
|
|
self.reactor.advance(60 * 6)
|
|
|
|
# the items should be cleared from cache
|
|
self.assertEqual(cache.get("key1"), None)
|
|
self.assertEqual(cache.get("key2"), None)
|
|
|
|
# add more stuff to caches
|
|
cache["key1"] = 1
|
|
cache["key2"] = 2
|
|
|
|
# set the return value of get_stat() to be lower than target_cache_memory_usage
|
|
mock_jemalloc_class.get_stat.return_value = 10000
|
|
|
|
# advance the reactor past the min_cache_ttl
|
|
self.reactor.advance(60 * 6)
|
|
|
|
# the items should still be in the cache
|
|
self.assertEqual(cache.get("key1"), 1)
|
|
self.assertEqual(cache.get("key2"), 2)
|